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In the era of rapidly developing technology, the need for an automatic and efficient system to control the temperature in the room is increasing. This project aims to produce an automatic fan that uses an LM35 temperature sensor and a PIR (Passive Infrared) sensor to control fan speed based on room temperature and human presence detection. The LM35 temperature sensor is used to accurately detect the change in air temperature and provide the necessary information to control the fan speed according to the user's needs. A PIR sensor is used to detect human presence in the room, allowing the fan to increase speed when the room is occupied and decrease speed when the room is empty. The project development process involved the design and integration of temperature sensors and PIR sensors into the fan control system. The use of a microcontroller as the main control of the system enables efficient processing of sensor data and automatic control of fan speed based on detected environmental conditions. The expected outcome of this project is an automatic fan that can efficiently control room temperature, respond to temperature changes and human presence, improve user comfort, and reduce unnecessary energy consumption